A study among the Piria Indians of Arizona investigated the relationship between a mother's diabetic status and the number of birth defects in her children. The results appear in the two-way table.

cistG 2021-01-05 Answered

A study among the Piria Indians of Arizona investigated the relationship between a mother's diabetic status and the number of birth defects in her children. The results appear in the two-way table. Diabetic status  Nondiabetic  Prediabetic  Diabetic  None 75436238 One or more 31139

What proportion of the women in this study had a child with one or more birth defects?

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Expert Answer

krolaniaN
Answered 2021-01-06 Author has 86 answers

Let us forst determine the row/column totals of the given table, which is the sum of all counts in the corresponding row/column.

 Nondiabetic  Prediabetic  Diabetic Row total None 75436238754+362+38=1154 One or more 3113931+13+9=53Column total754+31=785362+13=37538+9=471154+53=1207

We note that the table contains data about 1207 women (as 1207 is mentioned in the bottom right corner of the above table). Next, we note that 53 of the 1207 women had a child with one or more birth defects (as 53 is mentioned in the row "One or more” and in the column "Row Total” of the above table). 5312070.0439 Thus a proportion of 0.0439 women had a child with one or more birth defects.

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